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-rw-r--r--drivers/usb/host/ohci-at91.c1
-rw-r--r--drivers/usb/host/ohci-ep93xx.c2
-rw-r--r--drivers/usb/host/ohci-hub.c43
-rw-r--r--drivers/usb/host/ohci-omap.c5
-rw-r--r--drivers/usb/host/ohci-pci.c43
-rw-r--r--drivers/usb/host/ohci-pxa27x.c3
-rw-r--r--drivers/usb/host/ohci-sm501.c5
-rw-r--r--drivers/usb/host/ohci-ssb.c1
8 files changed, 54 insertions, 49 deletions
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index d72dc07dda01..e534f9de0f05 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -348,6 +348,7 @@ static int ohci_hcd_at91_drv_resume(struct platform_device *pdev)
if (!clocked)
at91_start_clock();
+ ohci_finish_controller_resume(hcd);
return 0;
}
#else
diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c
index 40c683f8987d..5adaf36e47d0 100644
--- a/drivers/usb/host/ohci-ep93xx.c
+++ b/drivers/usb/host/ohci-ep93xx.c
@@ -192,8 +192,8 @@ static int ohci_hcd_ep93xx_drv_resume(struct platform_device *pdev)
ohci->next_statechange = jiffies;
ep93xx_start_hc(&pdev->dev);
- usb_hcd_resume_root_hub(hcd);
+ ohci_finish_controller_resume(hcd);
return 0;
}
#endif
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index c638e6b33c43..28d6d775eb5f 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -326,6 +326,49 @@ static int ohci_bus_resume (struct usb_hcd *hcd)
return rc;
}
+/* Carry out the final steps of resuming the controller device */
+static void ohci_finish_controller_resume(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int port;
+ bool need_reinit = false;
+
+ /* See if the controller is already running or has been reset */
+ ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
+ if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
+ need_reinit = true;
+ } else {
+ switch (ohci->hc_control & OHCI_CTRL_HCFS) {
+ case OHCI_USB_OPER:
+ case OHCI_USB_RESET:
+ need_reinit = true;
+ }
+ }
+
+ /* If needed, reinitialize and suspend the root hub */
+ if (need_reinit) {
+ spin_lock_irq(&ohci->lock);
+ hcd->state = HC_STATE_RESUMING;
+ ohci_rh_resume(ohci);
+ hcd->state = HC_STATE_QUIESCING;
+ ohci_rh_suspend(ohci, 0);
+ hcd->state = HC_STATE_SUSPENDED;
+ spin_unlock_irq(&ohci->lock);
+ }
+
+ /* Normally just turn on port power and enable interrupts */
+ else {
+ ohci_dbg(ohci, "powerup ports\n");
+ for (port = 0; port < ohci->num_ports; port++)
+ ohci_writel(ohci, RH_PS_PPS,
+ &ohci->regs->roothub.portstatus[port]);
+
+ ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable);
+ ohci_readl(ohci, &ohci->regs->intrenable);
+ msleep(20);
+ }
+}
+
/* Carry out polling-, autostop-, and autoresume-related state changes */
static int ohci_root_hub_state_changes(struct ohci_hcd *ohci, int changed,
int any_connected)
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index 2aafa7b6c81f..3a7c24c03671 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -510,14 +510,15 @@ static int ohci_omap_suspend(struct platform_device *dev, pm_message_t message)
static int ohci_omap_resume(struct platform_device *dev)
{
- struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(dev));
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
if (time_before(jiffies, ohci->next_statechange))
msleep(5);
ohci->next_statechange = jiffies;
omap_ohci_clock_power(1);
- usb_hcd_resume_root_hub(platform_get_drvdata(dev));
+ ohci_finish_controller_resume(hcd);
return 0;
}
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index 40b62a35fd3c..4696cc912e16 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -238,42 +238,6 @@ static int __devinit ohci_pci_start (struct usb_hcd *hcd)
return ret;
}
-#if defined(CONFIG_USB_PERSIST) && (defined(CONFIG_USB_EHCI_HCD) || \
- defined(CONFIG_USB_EHCI_HCD_MODULE))
-
-/* Following a power loss, we must prepare to regain control of the ports
- * we used to own. This means turning on the port power before ehci-hcd
- * tries to switch ownership.
- *
- * This isn't a 100% perfect solution. On most systems the OHCI controllers
- * lie at lower PCI addresses than the EHCI controller, so they will be
- * discovered (and hence resumed) first. But there is no guarantee things
- * will always work this way. If the EHCI controller is resumed first and
- * the OHCI ports are unpowered, then the handover will fail.
- */
-static void prepare_for_handover(struct usb_hcd *hcd)
-{
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
- int port;
-
- /* Here we "know" root ports should always stay powered */
- ohci_dbg(ohci, "powerup ports\n");
- for (port = 0; port < ohci->num_ports; port++)
- ohci_writel(ohci, RH_PS_PPS,
- &ohci->regs->roothub.portstatus[port]);
-
- /* Flush those writes */
- ohci_readl(ohci, &ohci->regs->control);
- msleep(20);
-}
-
-#else
-
-static inline void prepare_for_handover(struct usb_hcd *hcd)
-{ }
-
-#endif /* CONFIG_USB_PERSIST etc. */
-
#ifdef CONFIG_PM
static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
@@ -312,13 +276,8 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
static int ohci_pci_resume (struct usb_hcd *hcd)
{
- struct ohci_hcd *ohci = hcd_to_ohci(hcd);
-
set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-
- /* FIXME: we should try to detect loss of VBUS power here */
- prepare_for_handover(hcd);
- ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable);
+ ohci_finish_controller_resume(hcd);
return 0;
}
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index 5d470263eed8..d4ee27d92be8 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -356,8 +356,7 @@ static int ohci_hcd_pxa27x_drv_resume(struct platform_device *pdev)
if ((status = pxa27x_start_hc(&pdev->dev)) < 0)
return status;
- usb_hcd_resume_root_hub(hcd);
-
+ ohci_finish_controller_resume(hcd);
return 0;
}
#endif
diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c
index 54b6ac2e3e4a..4a11e1816017 100644
--- a/drivers/usb/host/ohci-sm501.c
+++ b/drivers/usb/host/ohci-sm501.c
@@ -231,14 +231,15 @@ static int ohci_sm501_suspend(struct platform_device *pdev, pm_message_t msg)
static int ohci_sm501_resume(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
- struct ohci_hcd *ohci = hcd_to_ohci(platform_get_drvdata(pdev));
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
if (time_before(jiffies, ohci->next_statechange))
msleep(5);
ohci->next_statechange = jiffies;
sm501_unit_power(dev->parent, SM501_GATE_USB_HOST, 1);
- usb_hcd_resume_root_hub(platform_get_drvdata(pdev));
+ ohci_finish_controller_resume(hcd);
return 0;
}
#else
diff --git a/drivers/usb/host/ohci-ssb.c b/drivers/usb/host/ohci-ssb.c
index 7879f2fdad84..7275186db315 100644
--- a/drivers/usb/host/ohci-ssb.c
+++ b/drivers/usb/host/ohci-ssb.c
@@ -189,6 +189,7 @@ static int ssb_ohci_resume(struct ssb_device *dev)
ssb_device_enable(dev, ohcidev->enable_flags);
+ ohci_finish_controller_resume(hcd);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 19:49:49 +0000